{
  "description": "Pilot run of the playground's quasi-periodic Gaussian-process model on the HD 41248 HARPS velocities.",
  "built_utc": "2026-10-26T02:26:05Z",
  "script": "figures/playground/pilot_hd41248_gp.py",
  "data": "assets/data/playground/hd41248_harps.json",
  "n": 223,
  "rv_mean_subtracted_m_s": 3528.0586,
  "priors": {
    "eta1": {
      "type": "log-uniform",
      "low": 0.1,
      "high": 50.0
    },
    "eta2": {
      "type": "log-uniform",
      "low": 1.0,
      "high": 1000.0
    },
    "eta3": {
      "type": "uniform",
      "low": 10.0,
      "high": 40.0
    },
    "eta4": {
      "type": "log-uniform",
      "low": 0.1,
      "high": 10.0
    },
    "s": {
      "type": "log-uniform",
      "low": 0.1,
      "high": 20.0
    }
  },
  "start": {
    "eta1": 5.0,
    "eta2": 50.0,
    "eta3": 20.0,
    "eta4": 1.0,
    "s": 2.0
  },
  "sampler": {
    "kind": "random-walk Metropolis, Gaussian proposal, diagonal covariance",
    "steps": 60000,
    "adapted_during_first_steps": 8000,
    "discarded_as_burn_in": 8000,
    "seed": 1,
    "acceptance_rate": 0.2492,
    "final_adapted_step": [
      0.08479,
      0.2544,
      0.8479,
      0.1696,
      0.08479
    ],
    "page_step_sizes_rule": "2.38 / sqrt(5) times the posterior standard deviation in the sampling coordinate (Roberts, Gelman and Gilks 1997)",
    "page_step_sizes": [
      0.1268,
      0.2363,
      0.5337,
      0.1678,
      0.1446
    ]
  },
  "log_posterior": {
    "mode": -533.794,
    "median": -536.042,
    "p16": -537.957,
    "p84": -534.878
  },
  "posterior": {
    "eta1": {
      "mode": 2.926,
      "p16": 2.622,
      "median": 2.936,
      "p84": 3.31,
      "coordinate": "ln",
      "posterior_sd_in_coordinate": 0.1192,
      "step_size": 0.1268
    },
    "eta2": {
      "mode": 38.88,
      "p16": 30.41,
      "median": 37.89,
      "p84": 46.62,
      "coordinate": "ln",
      "posterior_sd_in_coordinate": 0.222,
      "step_size": 0.2363
    },
    "eta3": {
      "mode": 25.49,
      "p16": 25.12,
      "median": 25.57,
      "p84": 26.07,
      "coordinate": "linear",
      "posterior_sd_in_coordinate": 0.5014,
      "step_size": 0.5337
    },
    "eta4": {
      "mode": 0.6656,
      "p16": 0.5784,
      "median": 0.6716,
      "p84": 0.7852,
      "coordinate": "ln",
      "posterior_sd_in_coordinate": 0.1576,
      "step_size": 0.1678
    },
    "s": {
      "mode": 1.283,
      "p16": 1.133,
      "median": 1.296,
      "p84": 1.471,
      "coordinate": "ln",
      "posterior_sd_in_coordinate": 0.1359,
      "step_size": 0.1446
    }
  }
}